Add support for turf-line-intersect

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Expected Behavior

I want to detect which roads intersect the route line I've drawn on the map and the coordinate pairs for these intersections.

Current Behavior

Currently there is no way to do this that's doesn't require a lot customer math on the part of the developer. This is because our Java Turf library does not support turf-line-intersect.

Possible Implementation

Porting Turf's lineIntersect would be the most consistent, straightforward way to handle the above use case.

Inizia esaminando le voci non supportate della libreria Java Turf in docs/turf-port.md e confronta il comportamento richiesto con la documentazione di lineIntersect di Turf. Aggiungi il supporto per rilevare le intersezioni tra linee di percorso e stradali e restituire le relative coppie di coordinate, quindi verifica il comportamento risultante con geometrie lineari rappresentative.